6L80 Tune (2-> 1 downshift questions)

[67Steven]

New to the tuning world and I have been reading what I can, but I would like to address this one issue now if possible.

I am having an issue with the 2nd to 1st downshift- I basically need to bring the truck to a stop or nearly so before it shifts down.

It's terrible if you are rolling into a red light and it turns green. The transmission will either stay in second and lug, or lurch into first usually at or below 2 mph.

I have not changed a thing from the tuner I had do the original work. From looking at other 6l80 tunes, most 2->1 shifts (in Normal) are 7-9 mph @ 0% throttle, where mine is at 20 mph and doesn't occur until 1-2 mph. Am I reading that correctly? Should I look elsewhere for downshift properties?

Any pointers would be appreciated.

Well, I can't attach the file as it is too large (sheesh!)

http://www.filedropper.com/1972blazer